Furnace construction



Patented i/lay 1, 1923.

ALFONS H. VAN DE POL, OF PI-IILADELP'HIA, IPE1\TNSYLVANA ASSIGI\TOR 0 ONE-I-AIE T0 JOHN er. BRIDGEFORD, er EHILADELPHIA, PENI\TSYLVANIA.

Applcation fi1ed February 12, 1921,

T0 aZZ w h0m z't may concern.

Be it known that I, ALFONS H. VAN DE POL,

a subject of the Queen of Holland, residing along the side walls 10, are Vertical eonduits at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in Furnace Constructions, 0f which the follow ing is a specifiation.

This invention relates to improvements in furnaces and has for an object the provision of means f0r supplying preheated air to the fire box of the furnace t0 aid combustion, and the consumption of gases, which otl1erwise pass 01 through the fine.

Another object is the provision of means for forming an air bafle 0r retarding wall at the rear of the usual baflie wall so that the products of combustion will be further retarded before reaching the flue and thus decrease loss of heat and the amount of uel required and add greatly to the efliciency of the furnace.

A furtl1er abject of theinvention is the provision of a censtruction for accomplishing the abo"e results, which includes means whereby the air will be evenly distributed over the entire grate area.

With the above and other objeets in view, the invention further includes the following nevel features and details of construetion, to be hereinafter more fully deseribed, illustrated in the aecompanying drawings and pointed out in the appended claim.

In the drawingsz Figure 1 is a perspeetive view illustrating a fragmentary portion of a furnace with the invention applied thereto.

Figure 2 is a fragmentary vertical sectional view.

Figure 3 is a detail horizontal seetion through one of the horizontal air distributing conduits.

Referring in detail to the drawings, wherein like characters of reference denote corresponding parts, the reference character 10 indicates the side walls of a furnace, 11 the fire box having the usual bafle wall 12 extending along its rear and 13 designates the grate.

Located at the rear of the bafile wall 12 and arranged horizontally across the bottom of the urnace is a conduit 14, to which longitudinal Seral 1Wo. 444,425.

air is supplied by a pipe 15, the latter being controlled by a damper 16. Extending upwardly trom each end of the eonduit 14 and 17 wl1ich communicate with theconduit 14, the said vertical conduits 17 being provided with openings 18 located in their inner or eoinmunication with the conduits 18 and ex tending forwardly therefrom preferably to the front wall of the furnace. The eonduits 19 are f cellular construetion, being preferably formed of separate fire brick or tile 20, each of which is provided with air escape openings 21 and with end openings 22, which serve to provide eommunic'ation between the separate fire briek or tile. The openings 21 are arranged along the inner faces of the eonduits 19 above the grate 13 andair entering through the pipe 15 will travel upward through the conduit 17 and enter the eonduit 19. The passage of this air through the eonduits.will be retarded so that the separate tile will be filled with air, whieh will escape in relatively even quantities f0r distribution over the entire grate area. In addition, air will escape through the openings 18 and be directed across the furnace and form an air wall or baflie s0 as to retard the escape of the pr0ducts of combustion and permit them to be fully consurned. At the same time, the draft of the furnace will not be interferred with.

The invention is suseeptible of varios changes in its 0rm, proportions and minor details of construetion andthe ri,qht is herein reserved to make such ehanges as properly fall within the scope of the appended claim.

Having des jribed the invention What is claimed is The combination of a furnace including a grate and a baflie wall extending transversely across the furnace at the rear end of the grate; a conduit arranged horizontally across the bottom of the furnace in the rear of the bafiie wall, an air supply pipe arranged below the grate thence disposed through the bafl"le wall and communicating with the conduit intermediate its ends,a vertically disposed condut communcating and risng from each end of the horzontal condut and beng provded with air escape openngs de sgned t0 face each other and to direct the 5 ar across the furnace t0 form a wa11 s0 as to retard the escape of products of combuston, perforated conduts arranged horizonta1ly wthn each sde wal1 of the furnace and beng designed to communcate with the vertcally arranged conduts and extendng orwardly thercfrom to the front of the furn'ace.

In testmony whercof I aflx my sgnaturc.

ALFONS H. VAN DE POL. 

